Solder-feeding mechanism for canning-machines.



PATENTED OCT- 29. 1907.

APPLICATION FILED MAY 11 1907.

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NATHANIEL NELSON, or CHICAGO, ILLINOIS.

SOLDER-FEEDING-JVIECHANISM FOR CANNINGMACHINES.

Specification of Letters Patent.

Patented Oct. 29, 1907.

Application filed May 11. 1907. Serial No. 373.078.

To all whom it may concern:

Be it known that l, NATHANIEL NnLsoN, a citizen of the United States,residing at (.hicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Solder-FeedingMechanisms for Canning-Machines, of which the following is a speci tication My invention relates particularly to an improved mechanism forfeeding a thin sheet of solder to a die or stamp for the purpose ofcutting rings thcrcfroui, adapted to be fed upon the can lid and theirto the can itself when heat is applied to inelt the solder ring andsecure the lid.

My invention particularly resides in the provision of a pair of rollers,one of which is provided with a ratchet, a reciprocating arm providedwith a pawl adapted to operate the said ratchet, a locking dog forpreventing reverse movement. of the solder strip, and a novel andadjustable strap brake for preventing the reverse rota tion of therollers when said arm is reciprocated.

My invention further resides in the following features of constructionand arrangement as hereinafter described with reference to theaccompanying drawings, in which like numerals are used to designate likeparts in the several figures, and in which,

Figure .l is an end elevation of my improved mechan sm. Fig. 2 is avertical section taken therethrough, and showing the rollers and brakemechanism in elevation, and, Fig. 3 is a rear elevation of themechanism, the rollers being broken away.

Referring to the drawings, the feed rollers A, r\. are represented asfeeding between them a sheet of solder l3, and are mounted by means ofshort shafts G, (3 through a standard D. The upper roller A is providedupon its shalt C with a ratchet wheel E, operated to intermittentlyrotate said roller by means of a reciproeating operating arm F by meansof its pivotal connecting arm G mounted concentric with said ratchetwheel E, and provided with a pawl H adapted to engage, by gravity,within the notches of the ratchet wheel E to rotate the same upon themovement of the a rm ii. The operating arm F may be reciprocatml fromthe driven shaft of the machine by means of a strap eccentric, or anyother well known means, such means being well known in the canning art.

According to my invention I provide a bracket frame '1, mounted adjacentthe standard D, and provided with an offset arm 2, connected at to a su'rplemeut'al bracket 4. The bracket 1 is provided with a swinginglymounted locking dog 5, normally pressed into engagement with the ratchetwheel E by means of a retractile spring 6, arranged between the standardD and a projecting stem 7 of said dog 5, to securely hold the strip 13imreferred to.

movable under pressure of the die or punch previously The supplementalbracket f attached to the arm 2 of said frame l. inside the standard Dis provided with a strap 8 rigidly secured at its end 9 to the end ofsaid bracket by nreans of a clip 10. The strap 8 is connected at itsother end to an adjustable arm 11 by means of a strong coil spring l2,and said arm 11 is provided with a threaded opening for the reception ofan adjusting screw 13, arranged through the end 14: of said bracket 4.

The Operation of my device is as follows Supposing the operating arm 1!to have been moved to the position shown in full lines from that shownin dotted lines in Fig. vl, the ratchet E being operated thereby, andthe upper feed roller A being rotated in the direction of the arrowshown in Fig, 2. When the limit of movement of the arm I has beenreached, the sheet I; of solder will have been fed beneath the dies orpunches, and the locking dog 5 will engage one' of the ratchets of wheelE to prevent movement of said solder sheet. The upper roller A beingmoved in the direction of the arrow will force the strap 8 upward undertension of the coil spring 12 at the end thereof, but as soon as therotation ceases, and the arm I! is again moved to the position shown indotted lines in Fig. l, the spring 12 will contract and draw said strap8 tightly upon the roller A. Should there be any tendency of said rollerto move in the reverse direction, such movement will be prevented byreason of said spring 12, and the rigid connections at.

the other end 9 of said strap 8.

llaving thus fully described my invention 1 claim.

1. In a mechanism of the character described, the com bination with thefeed rollers for feeding a sheet of solder and the ratchet: wheel andoperating arm for actuating said rollers. ot' a locking dog arranged toengage said ratchet wheel to prevent reverse movement or said soldersheet. and a strap brake arranged upon one of said rollers and having aresilient connection at one end thereof to allow this rotation and arigid connection at its other end to prevent: the reverse movementthereof, substantially as described. i

3. In a mechanism of the character described, the coinhination with thefeed rollers for feeding a sheet of solder and the ratchet wheel andoperating arm for actuating said rollers, ol' :1 locking dog arranged toengage said ratchet wheel to prevent. reverse movement; of said solder,and a strap brake arranged upon one of said rollers and having anadjustable resilient: connection at one end there ol to allow this rtation, and a rigid connection at its other end to prevent the reversemovement thereof, substantially as described.

in testimony whereof I :rllix my signature in presence of two witnesses.

NATHANIEL NELSON.

